One way to get some idea if JMeter is coping with the load is to replace the HTTP/JDBC samplers with JavaTest samplers (using suitable sleep times).
If JMeter can't cope on your system with these samplers, it's unlikely to be able to cope with the original samplers. Either way, be sure to have a look at the resource usage on the system (CPU, memory) to see how close you are to the limits. Also, if your test is quite short, beware of startup/shutdown overheads. These can seriously affect throughput calculations. To improve JMeter maximum capability: - Use as few Listeners as possible. - use non-GUI mode with no Listeners (one is added automatically). S. On 5/4/05, Thinh Nguyen <[EMAIL PROTECTED]> wrote: > Hi all, > > I've started to use JMeter for the last 2 weeks or so. I am trying to do > some performance testing with 1 user multiple times (eg 20) and 20 > concurrent users at 1 time. > > The results that I received for the two scenarios are too much different. An > average of a user 20 times is around 5 seconds, whereas, average for 20 > concurrent users at 1 time is around 80 seconds. > > I understand that concurrent users will be slower, but I don't expect it to > be that much slower. I am not sure if this problem is part of the tool or > it's with the code. > > I even tried to run the JDBC testing, and the average result are still a lot > different from 1 user * 20 times compared to 20 users at 1 time. > > Could anyone please kindly explain to me or direct me to somewhere that I > can read/reduce the performance for concurrent users? I am facing the hurdle > at the moment, please kindly help. > > Thanks & Regards, > Thinh > > _________________________________________________________________ > REALESTATE: biggest buy/rent/share listings > http://ninemsn.realestate.com.au > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
